Improved Bath Sonication Method for Dispersion of Individual Single-Walled Carbon Nanotubes Using New Triphenylene-Based Surfactant
Improved Bath Sonication Method for Dispersion of Individual Single-Walled Carbon Nanotubes Using New Triphenylene-Based Surfactant
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DOI：
10.1143/jjap.47.2000
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发表时间：
2008-04
影响因子：
1.5
通讯作者：
Tatsuhiro Yamamoto;Y. Miyauchi;Jin Motoyanagi;T. Fukushima;T. Aida;Masaru Kato;S. Maruyama
中科院分区：
文献类型：
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作者：
Tatsuhiro Yamamoto;Y. Miyauchi;Jin Motoyanagi;T. Fukushima;T. Aida;Masaru Kato;S. Maruyama
我们开发了一种用于单壁碳纳米管(SWNTs)分散的新型表面活性剂。该表面活性剂是一种具有π共轭三苯骨架的两亲性化合物。单壁碳纳米管在表面活性剂的帮助下，使用普通的低功率浴用超声波进行分散。通过重复加入表面活性剂和超声，然后隔夜超声，得到了在D2O溶液中分散良好的HIPCO单壁碳纳米管。对分散溶液的光谱测量表明，在没有超速离心的情况下，单壁碳纳米管被充分分散，显示出清晰的光致发光(PL)。此外，将该方法应用于典型表面活性剂十二烷基苯硫酸钠(SDBS)对单壁碳纳米管的分散。在未经超速离心的溶液中观察到碳纳米管清晰的荧光，表明逐渐加入表面活性剂和超声作用，然后隔夜超声作用，极大地促进了碳纳米管在水中的有效分散。
We developed a new surfactant for the dispersion of single-walled carbon nanotubes (SWNTs). The surfactant is an amphiphilic compound with a π-conjugative triphenylene skeleton. SWNTs were individually dispersed by the aid of the surfactant using a common low-power bath sonicator. Well-dispersed HiPco SWNTs in D2O solution were obtained using the surfactant by the repetition of surfactant addition and sonication, followed by overnight sonication. Spectroscopic measurements of the dispersed solution revealed that the SWNTs were dispersed sufficiently to show clear photoluminescence (PL) without ultracentrifugation. Moreover, this method was applied to the dispersion of SWNTs using a typical surfactant, sodium dodecylbenzene sulfate (SDBS). The observed clear PL from SWNTs in the solution obtained without ultracentrifugation suggested that gradual surfactant addition and sonication, followed by overnight sonication, strongly contributed to the efficient dispersion of SWNTs in water.